292 The Woburn Field Experiments , 1905 and 1906. 
In 1905 swedes followed on Rotation I., a green crop 
(mustard) on Rotation II., wheat on Rotation III., and barley 
on Rotation IV. On the lower half of the field (8 acres) wheat 
was the crop all over. 
The course of rotation will accordingly be : — 
Rotation I. 
Rotation II. 
Rotation III. 
Rotation IV. 
1904. Roots 
. Roots 
. Roots 
. Roots 
(with cake and corn) 
1905. Swedes . . Green crop 
(with cake and corn) 
. Wheat 
. Barley 
1906. Barley 
. Wheat 
. Roots . . Green crop 
(with cake and corn) 
1907. Green crop 
. Roots . . Barley 
(with cake and corn) 
. Wheat 
1908. Wheat 
. Barley 
. Green crop 
. Roots 
(with cak e and corn) 
1909. Roots . . Green crop 
(with cake and corn) 
. Wheat 
. Barley 
1910. Barley 
. Wheat 
. Roots . . Green crop 
(with cake and corn) 
Rotation I. 1905, Swedes. 1906, Barley. 
The kohl rabi crop of 1904 was weighed out to the 150 
sheep that were used to feed it off, so that the same weight 
(12 tons to the acre) was consumed, together with clover hay 
chaff, on each of the four plots of the rotation. The sheep 
were on the plots from November 5 to December 2, 1904. The 
land was then ploughed, cultivated the following spring, 
ploughed again May 5-12, 1905, and on June 14 “ Monarch ” 
swede seed, at the rate of 4 lb. per acre, was drilled, together 
with 4 cwt. to the acre of basic superphosphate and 1 cwt. per 
acre of sulphate of potash. Basic superphosphate was used 
in preference to ordinary mineral superphosphate because of 
the lime in it and the known poverty of the soil in lime. 
Despite this, “ finger-and-toe ” attacked the plant to a consider- 
able extent, though, on the whole, a quite useful crop of swedes 
was obtained. This was pulled on November 14 and weighed 
November 22-27. The weights are given in Table III., below. 
As the crop was not influenced by the consumption of cake 
or corn on the land, discussion of the results is not called for 
here. 
Table III. — Rotation /. Swedes , 1905. 
Stackyard Field. 
Plot 
Produce 
per acre. 
T. 
c. 
q- 
lb. 
1 
17 
5 
1 
8 
2 
20 
4 
3 
10 
3 
21 
15 
1 
22 
4 
19 
4 
2 
18 
